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/* Test femode_t functions.
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Copyright (C) 2016-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <fenv.h>
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#include <stdio.h>
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#include <math-tests.h>
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static int
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test_mmee (int mode1, int mode2, int exc1, int exc2)
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{
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int result = 0;
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printf ("testing %x %x %x %x\n", (unsigned int) mode1, (unsigned int) mode2,
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(unsigned int) exc1, (unsigned int) exc2);
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feclearexcept (FE_ALL_EXCEPT);
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int ret = fesetround (mode1);
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if (ret != 0)
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{
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if (ROUNDING_TESTS (float, mode1))
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{
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puts ("first fesetround failed unexpectedly");
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result = 1;
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}
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else
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puts ("first fesetround failed, cannot test");
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return result;
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}
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ret = fesetexcept (exc1);
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if (ret != 0)
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{
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if (EXCEPTION_TESTS (float) || exc1 == 0)
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{
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puts ("first fesetexcept failed unexpectedly");
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result = 1;
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}
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else
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puts ("first fesetexcept failed, cannot test");
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return result;
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}
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femode_t saved;
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ret = fegetmode (&saved);
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if (ret != 0)
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{
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puts ("fegetmode failed");
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result = 1;
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return result;
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}
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feclearexcept (FE_ALL_EXCEPT);
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ret = fesetround (mode2);
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if (ret != 0)
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{
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if (ROUNDING_TESTS (float, mode2))
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{
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puts ("second fesetround failed unexpectedly");
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result = 1;
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}
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else
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puts ("second fesetround failed, cannot test");
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return result;
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}
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ret = fesetexcept (exc2);
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if (ret != 0)
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{
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if (EXCEPTION_TESTS (float) || exc2 == 0)
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{
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puts ("second fesetexcept failed unexpectedly");
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result = 1;
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}
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else
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puts ("second fesetexcept failed, cannot test");
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return result;
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}
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ret = fesetmode (&saved);
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if (ret != 0)
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{
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puts ("fesetmode failed");
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result = 1;
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return result;
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}
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/* Verify that the rounding mode was restored but the exception
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flags remain unchanged. */
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ret = fegetround ();
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if (ret != mode1)
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{
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printf ("restored rounding mode %x not %x\n", (unsigned int) ret,
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(unsigned int) mode1);
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result = 1;
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}
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ret = fetestexcept (FE_ALL_EXCEPT);
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if (ret != exc2)
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{
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printf ("exceptions %x not %x\n", (unsigned int) ret,
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(unsigned int) exc2);
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result = 1;
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}
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/* Likewise, with default modes. */
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ret = fesetmode (FE_DFL_MODE);
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if (ret != 0)
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{
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puts ("fesetmode (FE_DFL_MODE) failed");
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result = 1;
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return result;
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}
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ret = fegetround ();
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if (ret != FE_TONEAREST)
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{
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printf ("FE_DFL_MODE rounding mode %x not %x\n", (unsigned int) ret,
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(unsigned int) FE_TONEAREST);
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result = 1;
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}
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ret = fetestexcept (FE_ALL_EXCEPT);
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if (ret != exc2)
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{
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printf ("FE_DFL_MODE exceptions %x not %x\n", (unsigned int) ret,
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(unsigned int) exc2);
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result = 1;
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}
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return result;
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}
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static int
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test_mme (int mode1, int mode2, int exc1)
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{
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int result = 0;
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result |= test_mmee (mode1, mode2, exc1, 0);
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result |= test_mmee (mode1, mode2, exc1, FE_ALL_EXCEPT);
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#ifdef FE_DIVBYZERO
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result |= test_mmee (mode1, mode2, exc1, FE_DIVBYZERO);
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#endif
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#ifdef FE_INEXACT
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result |= test_mmee (mode1, mode2, exc1, FE_INEXACT);
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#endif
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#ifdef FE_INVALID
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result |= test_mmee (mode1, mode2, exc1, FE_INVALID);
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#endif
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#ifdef FE_OVERFLOW
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result |= test_mmee (mode1, mode2, exc1, FE_OVERFLOW);
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#endif
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#ifdef FE_UNDERFLOW
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result |= test_mmee (mode1, mode2, exc1, FE_UNDERFLOW);
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#endif
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return result;
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}
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static int
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test_mm (int mode1, int mode2)
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{
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int result = 0;
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result |= test_mme (mode1, mode2, 0);
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result |= test_mme (mode1, mode2, FE_ALL_EXCEPT);
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#ifdef FE_DIVBYZERO
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result |= test_mme (mode1, mode2, FE_DIVBYZERO);
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#endif
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#ifdef FE_INEXACT
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result |= test_mme (mode1, mode2, FE_INEXACT);
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#endif
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#ifdef FE_INVALID
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result |= test_mme (mode1, mode2, FE_INVALID);
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#endif
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#ifdef FE_OVERFLOW
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result |= test_mme (mode1, mode2, FE_OVERFLOW);
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#endif
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#ifdef FE_UNDERFLOW
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result |= test_mme (mode1, mode2, FE_UNDERFLOW);
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#endif
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return result;
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}
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static int
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test_m (int mode1)
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{
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int result = 0;
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#ifdef FE_DOWNWARD
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result |= test_mm (mode1, FE_DOWNWARD);
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#endif
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#ifdef FE_TONEAREST
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result |= test_mm (mode1, FE_TONEAREST);
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#endif
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#ifdef FE_TOWARDZERO
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result |= test_mm (mode1, FE_TOWARDZERO);
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#endif
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#ifdef FE_UPWARD
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result |= test_mm (mode1, FE_UPWARD);
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#endif
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return result;
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}
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static int
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do_test (void)
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{
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int result = 0;
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#ifdef FE_DOWNWARD
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result |= test_m (FE_DOWNWARD);
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#endif
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#ifdef FE_TONEAREST
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result |= test_m (FE_TONEAREST);
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#endif
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#ifdef FE_TOWARDZERO
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result |= test_m (FE_TOWARDZERO);
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#endif
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#ifdef FE_UPWARD
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result |= test_m (FE_UPWARD);
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#endif
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return result;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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